Sash-balance



UNITED STATES PATENT ()FFICE.

ANTON LANG, OF NEW BRUNSVICK, NEW V JERSEY.

SASH-BALANCE.

SPECIFICATION forming part of Letters Patent No. 477,807, dated June 28, 1892.

' Application filed January 6, 1892. Serial No. 417.177. (No model.)

Brunswick, in the county of Sussex and State of NewJersey, have invented certain new and useful Improvements in \Vindow-Sashes, of

which the following is a specification.

This invention relates to an improved sash balance and fastener by which the sash may be set-to any desired position and automatically returned to its normal position. and by which both sashes may be firmly locked into any desired position and prevented from being opened either from the inside or outside.

The invention consists of the combination of a window-sash having racks applied to the side rails of the sash with pinions meshing with said racks and spiral balancing-springs applied to the shafts of said pinions. In con nection with the pinions locking devices are used, so as to lock both sashes in position when the locking devices are placed in engagement-with the pinions. The bearings of the pinion-shafts, the outer ends of the balancing-springs, and the guide-rod of the locking devices aiesupported by a detachable frame, which is applied to bracket-s attached to the window-frame, so that the entire sash balancing and fastening mechanism can be applied to orremoved from the window-frame with great facility.

The invention consists, lastly, of .certain details of construction and combination of parts, which will be fully set forth and described hereinafter, and'finally pointed out in the claims.

In the accompanyingdrawings, Figure 1 represents a front elevation of a windowframe and two sashes with my improved spring balance and fasteners applied thereto. Fig. 2 is a vertical section through the window-frame, showing the sashes and their balancing and fastening devices in side elevation. Figs. 3 and 4 are respectively a side elevation and an end elevation of the spring balancing and fastening devices, also at one side of the sashes, drawn on a larger'scale. Fig. 5 is a horizontal section on line 5 5, Fig. 2, showing a top view of the sash balancing and fastening devices, also on a larger scale.

Similar letters of reference indicate corresponding parts.

window-frame, and B B the sashes of the same. To the side rails of the sashes B are applied racks O, which are engaged by the ancing-springs C are attached to the shafts of the pinions C, while the outer-ends of the same are attached to the lower'transverse rod d of arectangular oblong frame D, which is supported by recessed lugs d of castmetal brackets D, that are attached by screws or otherwise to the window-casing. The window-frame A is provided with boxes A at each side of the sashes, in which boxes the sash balancing and fastening devices are arranged, as shown in Fig. 2. The rectangular frame D is provided with a center bar d and two side bars D by which the bearings for the pinion-shafts are supported. The center bar d is provided at its upper and lower ends with fixed sleeves d CF, in which is'guided a spring-actuated rod E, that carriesthe pawls E, which extend in opposite directions from the rod E and which are attached at different heights to the same, so as to engage, respectively, the pinion C of the .lower sash B and the pinion C of the upper sash B. The pinion for the upper sash is arranged at some distance above the pinion for 'thelo'wer sash, so that both pinions O are always in gear with the racks 0 on the side rails of the sashes. The spring-actuated pawl-carrying rod E is operated by means of a suitable crank-pin f, which projects through a slot f in the-front part of the window-frame and which is ,provided at its outer end with a screw-nut f The inner end of the crank-pin f is attached to an arm f that is pivoted to the upper part of the frame D, as shown in Fig. 3. The arm f is connected by a pivot-link f with one of the parts E, so that the raising or lowering of the crank-pin f will raise or lower the rod E and pawls E and cause the withdrawal of the latter from the engagements of the same with the pinions O. In place of the crankpin and its connection with the pawl-carrying rod E any other equivalent mechanism may Referring to the drawings,A represents atoo be used by which the rod E and pawls can be operated. The screw-nut f at the left-hand side of the frameAis adjustable on the crankpinf, so as to permit the clamping of the pin f to the frame A and hold thereby the pawls E either out of engagement with the pinions or place them in engagement therewith, while the screw-nut at the right-hand side of the window-frame A is made detachable from thereon.

At each side of the window-frame A is arranged a detachable portion a, which is located at the height of the meeting-rails of the sashes and which serves for inserting the entire sash-operating mechanism in position or for removing the same for repairs in case this would be necessary. The detachable portion or other fastening devices and provided with a slotf for the crank-pin f, by which thepawlcarrying rod E is operated. The tension of the balancing-springs O is so adjusted that the sashes can be readily placed into any desired position. For moving the sashes the pawls E have to be withdrawn from thepinions O at both sides of the frame E. For the ordinary every-day use of the sashes it is prefer-- able to set the pawls at the left-hand side of the sashes by meansof the clamping screwwithdraw the pawls at the right-hand side of the sashes wherever either the upper or lower sash is to be set. -As soon as the desired position of the sash is obtained, the right-hand screw-nut is released, so that the pawls immediately" engage the pinions and stop the sash at the required point. WVhenever it is desired to lockthe sashes either in open or closed position, so as to prevent interference with the same eitherfromthe outside or inside, the left-hand pawls are lowered into mesh with the pinions at the left-hand side of the sashes and retained in position by the clamping-nut f when the sashes cannot be lifted at all. By'removing the screw-nut f at the right-hand side the position of the sashes canf not be changed at all, even from the inside, 1 so that the sashes may be locked during the 1 absence of the owner from the building or.

moved into closed position, the lower sash Winding up the balancing-springs, while the lifting of the upper sash is facilitated by its balanci ng-sprin gs. the pin f, but 1s not adapted for adjustment My improved sash balance and fastener has the following advantages: First, that the sashes can be set quickly and conveniently by grown persons as well as by children, as

only the lifting of the pawls is required, and,

secondly, that the locking devices secure the sashes in any desired position, so as to furnish thereby a reliable safety device for the same.

a is attached in position by means of screws Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of a sash havingarack allel side bars, and a vertical middle bar,

sleeves on said middlebar,avertically-movable "spring-actuated rod guided in said sleeves, a

pinion meshing with the sash-rack, pawls on said vertically-movable bar engaging said i pinions, and means for'operating said pawls. nut f permanently into raised position and i 2. The combination. of a sash having a rack l attached to its side rail, a frame supported in brackets and provided with side bars and a Evertical middle bar, guide-sleeves on said middle bar, a spring-actuated rod guided in 5 arm, as f attached to the rectangular frame, a link connecting said arm and pawl, a crankpin connected to the outer end of said arm and projecting through the window-casing, and a nut on the outer end of saidcrank-pin.

In testimony that I claim the foregoingas my invention I have signed my name in presence of two subscribing witnesses.

, ANTON LANG. Witnesses:

. PAUL .GonPEL,

CHARLES SCHROEDER. 

